Excessive Heat Warning 6, NWS Philadelphia/Mount Holly

178 
WWUS71 KPHI 271937
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
337 PM EDT Tue Aug 27 2024

NJZ015-017>019-PAZ070-071-104-106-280900-
/O.CON.KPHI.EH.W.0006.240828T1500Z-240829T0000Z/
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Eastern Montgomery-Lower Bucks-
Including the cities of Camden, Media, Doylestown, Trenton,
Moorestown, Morrisville, Mount Holly, Glassboro, Cherry Hill,
Lansdale, Philadelphia, and Norristown
337 PM EDT Tue Aug 27 2024

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT 
WEDNESDAY...

* WHAT...Dangerously hot conditions with heat index values up to 105 
  expected.

* WHERE...In New Jersey, Mercer, Camden, Gloucester, and 
  Northwestern Burlington Counties. In Pennsylvania, Delaware, 
  Eastern Montgomery, Lower Bucks, and Philadelphia Counties.

* WHEN...From 11 AM to 8 PM EDT Wednesday.

* IMPACTS...Heat related illnesses increase significantly during 
  extreme heat and high humidity events.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of 
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car 
interiors will reach lethal temperatures in a matter of minutes.

To reduce risk during outdoor work, the Occupational Safety and 
Health Administration recommends scheduling frequent rest breaks in 
shaded or air conditioned environments. Anyone overcome by heat 
should be moved to a cool and shaded location. Heat stroke is an 
emergency! Call 9 1 1.

&&

$$

DEZ001-NJZ007>010-012-013-020-027-PAZ060>062-101>103-105-280900-
/O.CON.KPHI.HT.Y.0011.240828T1500Z-240829T0000Z/
New Castle-Warren-Morris-Hunterdon-Somerset-Middlesex-Western
Monmouth-Ocean-Southeastern Burlington-Berks-Lehigh-Northampton-
Western Chester-Eastern Chester-Western Montgomery-Upper Bucks-
Including the cities of Jackson, Washington, Morristown, Oxford,
Somerville, Easton, West Chester, Reading, Flemington, Kennett
Square, Wilmington, Allentown, Honey Brook, Bethlehem,
Collegeville, Freehold, Perkasie, Wharton State Forest,
Pottstown, New Brunswick, and Chalfont
337 PM EDT Tue Aug 27 2024

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT 
WEDNESDAY...

* WHAT...Heat index values up to 103 expected.

* WHERE...Portions of northern Delaware, central, northern, 
  northwest, and southern New Jersey, and east central and southeast 
  Pennsylvania.

* WHEN...From 11 AM to 8 PM EDT Wednesday.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of 
the sun, and check up on relatives and neighbors.

To reduce risk during outdoor work, the Occupational Safety and 
Health Administration recommends scheduling frequent rest breaks in 
shaded or air conditioned environments. Anyone overcome by heat 
should be moved to a cool and shaded location. Heat stroke is an 
emergency! Call 9 1 1.

&&

$$

DeSilva

332 
WWUS71 KPHI 280650
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
250 AM EDT Wed Aug 28 2024

NJZ015-017>019-PAZ070-071-104-106-282000-
/O.CON.KPHI.EH.W.0006.240828T1500Z-240829T0000Z/
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Eastern Montgomery-Lower Bucks-
Including the cities of Camden, Mount Holly, Morrisville, Media,
Cherry Hill, Philadelphia, Doylestown, Glassboro, Norristown,
Lansdale, Moorestown, and Trenton
250 AM EDT Wed Aug 28 2024

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING 
TO 8 PM EDT THIS EVENING...

* WHAT...Dangerously hot conditions with heat index values up to 105 
  expected.

* WHERE...In New Jersey, Mercer, Camden, Gloucester, and 
  Northwestern Burlington Counties. In Pennsylvania, Delaware, 
  Eastern Montgomery, Lower Bucks, and Philadelphia Counties.

* WHEN...From 11 AM this morning to 8 PM EDT this evening.

* IMPACTS...Heat related illnesses increase significantly during 
  extreme heat and high humidity events.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of 
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car 
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose 
fitting clothing. Try to limit strenuous activities to early morning 
or evening. Take action when you see symptoms of heat exhaustion and 
heat stroke.

&&

$$

DEZ002-003-MDZ012-015-019-020-NJZ016-021>023-282000-
/O.EXA.KPHI.HT.Y.0011.240828T1500Z-240829T0000Z/
Kent-Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline-Salem-
Cumberland-Atlantic-Cape May-
Including the cities of Georgetown, Hammonton, Easton,
Chestertown, Millville, Denton, Dover, Pennsville, Cape May Court
House, and Centreville
250 AM EDT Wed Aug 28 2024

...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS 
EVENING...

* WHAT...Heat index values up to 106 expected.

* WHERE...In Delaware, Kent and Inland Sussex Counties. In Maryland, 
  Caroline, Kent MD, Queen Annes, and Talbot Counties. In New 
  Jersey, Atlantic, Cape May, Cumberland, and Salem Counties.

* WHEN...From 11 AM this morning to 8 PM EDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of 
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose 
fitting clothing. Try to limit strenuous activities to early morning 
or evening. Take action when you see symptoms of heat exhaustion and 
heat stroke.

&&

$$

DEZ001-NJZ007>010-012-013-020-027-PAZ060>062-101>103-105-282000-
/O.CON.KPHI.HT.Y.0011.240828T1500Z-240829T0000Z/
New Castle-Warren-Morris-Hunterdon-Somerset-Middlesex-Western
Monmouth-Ocean-Southeastern Burlington-Berks-Lehigh-Northampton-
Western Chester-Eastern Chester-Western Montgomery-Upper Bucks-
Including the cities of Wharton State Forest, Honey Brook,
Jackson, Wilmington, New Brunswick, Pottstown, Oxford, Easton,
Collegeville, Kennett Square, Morristown, Flemington, Bethlehem,
Washington, Reading, Perkasie, Freehold, Somerville, Chalfont,
West Chester, and Allentown
250 AM EDT Wed Aug 28 2024

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM 
EDT THIS EVENING...

* WHAT...Heat index values up to 104 expected.

* WHERE...In Delaware, New Castle County. In Pennsylvania, Lehigh 
  Valley, Berks County, and western suburbs. In New Jersey, portions 
  of northwest New Jersey and east Central New Jersey.

* WHEN...From 11 AM this morning to 8 PM EDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of 
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose 
fitting clothing. Try to limit strenuous activities to early morning 
or evening. Take action when you see symptoms of heat exhaustion and 
heat stroke.

&&

$$

SFJ

282 
WWUS71 KPHI 281444
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
1044 AM EDT Wed Aug 28 2024

NJZ015-017>019-PAZ070-071-104-106-290000-
/O.CON.KPHI.EH.W.0006.240828T1500Z-240829T0000Z/
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Eastern Montgomery-Lower Bucks-
Including the cities of Trenton, Norristown, Glassboro,
Morrisville, Camden, Lansdale, Media, Mount Holly, Doylestown,
Philadelphia, Cherry Hill, and Moorestown
1044 AM EDT Wed Aug 28 2024

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS 
EVENING...

* WHAT...Dangerously hot conditions with heat index values up to 105 
  expected.

* WHERE...In New Jersey, Mercer, Camden, Gloucester, and 
  Northwestern Burlington Counties. In Pennsylvania, Delaware, 
  Eastern Montgomery, Lower Bucks, and Philadelphia Counties.

* WHEN...Until 8 PM EDT this evening.

* IMPACTS...Heat related illnesses increase significantly during 
  extreme heat and high humidity events.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of 
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car 
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose 
fitting clothing. Try to limit strenuous activities to early morning 
or evening. Take action when you see symptoms of heat exhaustion and 
heat stroke.

&&

$$

DEZ001-NJZ007>010-012-013-020-027-PAZ060>062-101>103-105-290000-
/O.CON.KPHI.HT.Y.0011.240828T1500Z-240829T0000Z/
New Castle-Warren-Morris-Hunterdon-Somerset-Middlesex-Western
Monmouth-Ocean-Southeastern Burlington-Berks-Lehigh-Northampton-
Western Chester-Eastern Chester-Western Montgomery-Upper Bucks-
Including the cities of Flemington, Honey Brook, Easton,
Allentown, Freehold, Morristown, West Chester, Perkasie,
Washington, Chalfont, Collegeville, Wilmington, Pottstown,
Oxford, Wharton State Forest, Somerville, Reading, New Brunswick,
Jackson, Kennett Square, and Bethlehem
1044 AM EDT Wed Aug 28 2024

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING...

* WHAT...Heat index values up to 104 expected.

* WHERE...Portions of northern Delaware, central, northern, 
  northwest, and southern New Jersey, and east central and southeast 
  Pennsylvania.

* WHEN...Until 8 PM EDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of 
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose 
fitting clothing. Try to limit strenuous activities to early morning 
or evening. Take action when you see symptoms of heat exhaustion and 
heat stroke.

&&

$$

DEZ002-003-MDZ012-015-019-020-NJZ016-021>023-290000-
/O.CON.KPHI.HT.Y.0011.240828T1500Z-240829T0000Z/
Kent-Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline-Salem-
Cumberland-Atlantic-Cape May-
Including the cities of Chestertown, Easton, Dover, Pennsville,
Cape May Court House, Centreville, Millville, Denton, Georgetown,
and Hammonton
1044 AM EDT Wed Aug 28 2024

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING...

* WHAT...Heat index values up to 105 expected.

* WHERE...In Delaware, Kent and Inland Sussex Counties. In Maryland, 
  Caroline, Kent MD, Queen Annes, and Talbot Counties. In New 
  Jersey, Atlantic, Cape May, Cumberland, and Salem Counties.

* WHEN...Until 8 PM EDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of 
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose 
fitting clothing. Try to limit strenuous activities to early morning 
or evening. Take action when you see symptoms of heat exhaustion and 
heat stroke.

&&

$$

RCM

253 
WWUS71 KPHI 282357
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
757 PM EDT Wed Aug 28 2024

NJZ015-017>019-PAZ070-071-104-106-290100-
/O.EXP.KPHI.EH.W.0006.000000T0000Z-240829T0000Z/
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Eastern Montgomery-Lower Bucks-
Including the cities of Glassboro, Lansdale, Doylestown, Trenton,
Cherry Hill, Mount Holly, Morrisville, Media, Norristown,
Philadelphia, Camden, and Moorestown
757 PM EDT Wed Aug 28 2024

...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM EDT THIS EVENING...

The threat has ended.

$$

DEZ001>003-MDZ012-015-019-020-NJZ007>010-012-013-016-020>023-027-
PAZ060>062-101>103-105-290100-
/O.EXP.KPHI.HT.Y.0011.000000T0000Z-240829T0000Z/
New Castle-Kent-Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline-
Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth-Salem-
Ocean-Cumberland-Atlantic-Cape May-Southeastern Burlington-Berks-
Lehigh-Northampton-Western Chester-Eastern Chester-Western
Montgomery-Upper Bucks-
Including the cities of Freehold, Chalfont, Pottstown, Dover,
Collegeville, Oxford, Hammonton, Wharton State Forest, West
Chester, Reading, Chestertown, Georgetown, Denton, Kennett
Square, Pennsville, Washington, Flemington, Millville, New
Brunswick, Wilmington, Somerville, Centreville, Easton,
Allentown, Perkasie, Morristown, Honey Brook, Cape May Court
House, Jackson, and Bethlehem
757 PM EDT Wed Aug 28 2024

...HEAT ADVISORY WILL EXPIRE AT 8 PM EDT THIS EVENING...

The threat has ended.

$$

PO

Area Forecast Discussion
National Weather Service Mount Holly NJ
1216 AM EDT Tue Aug 27 2024

.SYNOPSIS...
A weak surface trough will drift offshore tonight, before high
pressure builds into the region on Tuesday. A cold front will move
across the area late Wednesday into Wednesday night. The front
slowly pushes south, while a disturbace aloft move across the area.
High pressure shifts into the Canadian Maritimes Friday, before a
cold front moves across the area Saturday into Saturday night. Yet
another cold front is expected Sunday night.

&&

.NEAR TERM /THROUGH TODAY/...
Dry conditions can be expected overnight. With light and
variable winds and mostly clear skies, we should see some patchy
fog develop, particularly in areas that received rainfall
earlier. Expect low temperatures in the low to mid 60s in most
areas.

Increasing influence from the offshore high pressure looks to keep
the area dry Tuesday through Tuesday night. Temperatures look to be
a few degrees warmer though as we continue to move towards more
humid conditions for the mid-week. Highs mainly in the upper 80s
with a few spots hitting 90 daytime Tuesday.

&&

.SHORT TERM /TONIGHT THROUGH THURSDAY NIGHT/...
On Wednesday, our area will be under the influence of return flow,
leading to warming temperatures and increasing dewpoints. In fact,
we've issued an Excessive Heat Watch for much of eastern
Pennsylvania, portions of northern, central, and southern New
Jersey, as well as northern Delware where heat index values are
expected to approach 105 degrees Wednesday afternoon due to
temperatures in the mid 90s and dew points in the low 70s.

Another concern for Wednesday into Wednesday night will be the
potential for severe weather. Showers and thunderstorms are expected
to develop ahead of an approaching cold front. Much of the guidance
does not have the showers and thunderstorms reaching our area until
closer to sunset, which could limit severe potential. However, there
will likely be enough instability from the daytime lingering, as
well as a potent short wave, that strong to severe storms could
continue into the evening hours. With PW values over 2 inches, any
storms could also have heavy rainfall as well.

As we move into Thursday and Thursday night, the front will sag to
our south. However, another short wave/vorticity impulse will move
across the area, which could lead to another round or two of showers
or thunderstorms.

&&

.LONG TERM /FRIDAY THROUGH MONDAY/...
The potential for unsettle weather remains for much of the long term
period, with the main focus on Saturday. On Friday, high pressure
shifts into the Canadian Maritimes, but there could be some shower
activity as a short wave/vorticity impulse moves across the area.

By Saturday and Saturday night, a cold front is forecast to move
across the area. This will lead to another round of showers and
possible thunderstorms. Instability will be limited, so the severe
threat will be limited as well. However, PW values exceed 2 inches
again, so heavy rainfall will be possible with any showers or
thunderstorms.

Yet another cold front is expected late Sunday into Sunday night
with another round of showers. Little if any instability is
forecast, so thunderstorms are not expected.

Dry weather is expected by early next week as high pressure begins
to approach the area front the west Monday.

&&

.AVIATION /04Z TUESDAY THROUGH SATURDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

Tonight...VFR with just some passing clouds are expected.
Patchy fog development is possible. Winds 5 kts or less and
variable early, potentially settling out of the northeast by
06Z. High confidence.

Tuesday...VFR conditions expected through the period with no
significant weather. Light winds around 5 knots becoming
southwesterly except at KMIV/KACY where sea/bay breeze influence
may keep winds more south/southeasterly. High confidence in
prevailing VFR.

Outlook...

Wednesday-Wednesday night...VFR through much of the day. Showers and
thunderstorms possible later in the day and into the night which
could temporarily lead to lower conditions.

Thursday-Thursday night...Sub VFR conditions possible with a chance
of showers or thunderstorms.

Friday-Friday night...Sub-VFR conditions possible, a chance of VFR
conditions during the day.

Saturday...Sub-VFR conditions possible with a chance of showers and
thunderstorms.

&&

.MARINE...
Conditions are forecast to remain below advisory conditions
through Tuesday night. Winds bottom out to less than 10 knots
tonight and continue through Tuesday night. Seas 1-3 feet
throughout the period.

Outlook...

Wednesday-Wednesday night...Conditions expected to remain below
advisory levels. Chance of showers and thunderstorms which may lead
to locally higher winds and waves.

Thursday-Saturday...Seas could approach Small Craft Advisory levels
with seas 5-6 feet. Chance of showers and thunderstorms Thursday and
Thursday night, as well as Saturday which may lead to locally higher
winds and waves.

Rip Currents...

For Tuesday, winds turn more east/southeasterly, though will decrease
to around 5-10 MPH. With light onshore flow, an 8-9 second period,
and breaking waves of 1 to 2 feet, a LOW risk for the development
of rip currents is in place for all beaches.

For Wednesday, winds turn more southwesterly, though will
increase to 10-15 MPH. However, with a 6-8 second period, and
breaking waves of 1 to 2 feet, a LOW risk for the development of
rip currents continues for all beaches.

For specific beach forecasts, visit weather.gov/beach/phi

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Excessive Heat Watch from Wednesday afternoon through
     Wednesday evening for PAZ060>062-070-071-101>106.
     Air Quality Alert from 11 AM this morning to 11 PM EDT this
     evening for PAZ070-071-101>106.
NJ...Excessive Heat Watch from Wednesday afternoon through
     Wednesday evening for NJZ007>010-012-013-015-017>020-027.
     Air Quality Alert from 11 AM this morning to 11 PM EDT this
     evening for NJZ012>019-021.
DE...Excessive Heat Watch from Wednesday afternoon through
     Wednesday evening for DEZ001.
MD...None.
MARINE...None.

&&

SYNOPSIS...Robertson
NEAR TERM...AKL/Kruzdlo/Staarmann/Wunderlin
SHORT TERM...Robertson
LONG TERM...Robertson
AVIATION...AKL/Kruzdlo/Robertson
MARINE...AKL/Robertson